The use of colour film in the study of proton channelling

Abstract

This note describes a technique which uses colour film to provide semi-quantitative energy analysis as well as information on the spatial distribution of protons emerging from thin single-crystal foils. Characteristic “star patterns”, which are produced when a well-collimated proton beam is incident parallel to a major crystal direction, appear red on a yellow background, and show clearly the two distinct energy groups corresponding to the channelled and random components.

Keywords

Colour Polymer Spatial Distribution Proton Beam Energy Analysis

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